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to reduce the infrastructure's impact upon the environment. on the front lines of protecting the beaches, are the crews that clean out the stormwater system. man: this big vactor truck works on the same principle as your vacuum cleaner in your house, only this thing sucks up the whole house. some of the storm drains collect a lot of trash. i started cleaning drains in '93. they were horrible because they hadn't been maintained so much. now this is a priority. you have trash, animal waste, and it ends up on our beaches. that is a health risk. that is one of the main reasons why we have to close the beaches after heavy rain. narrator: but even when it's not raining, water still enters the stormwater system, carrying pollutants. here on the west coast, a lot of our storm drain systems are separate from the sanitary sewer system, so if you dump something in the storm drain, it goes right to the ocean untreated. alamillo: we haven't had a major rainstorm in the last year or so yet there's a lot of water in this creek here. i would say 20% of it is natural and the other 80% is runoff. shapiro:
will make the environment better. we had approximately 1,000 overflows occur in 1999. today, we've reduced overflows by 45% to 50%. and it's going to continue to improve as we go forward with the rehabilitation program that's required under the consent decree. narrator: an important piece of the program is the construction of an 8-mile-long storage tank that will significantly decrease combined sewer overflows. man: right now, we're at the bottom of the rockdale construction shaft. we're 310 feet below grade, deep under atlanta in hard rock. in the downtown area of atlanta, the sewer system and the stormwater system are combined and there are overflows during storm events, and so the purpose of this system is to relieve that flow, take it into the tunnel, transport it to a brand-new treatment plant, clean up the chattahoochee river. narrator: instead of the combined sewage overflowing into the river, it will flow into this tunnel that acts as a storage tank. the water will then slowly empty into the new plant for treatment before it's released back into the river. man: the system in total
Search Results 0 to 1 of about 2